here's abc's john muller. >> reporter: he is the elusive hairy giant of legend. a tabloid hero, punchline and news diversion. now big foot back in the headlines. but it's not sightings. this time something brand new. audio. big foot speaks. listen. listen again. the high-pitched shriek come from a swampy area in oregon. the recording, given to the oregonian newspaper. not impressed? people living in the area are. they've been hearing strange cries in the night since november. denise on the left told the paper she thinks whatever is in the swamp is calling out to another creature. some suggest it could be a young big foot lost, calling out for his fellow big foots. >> these are not just animals. they're a type of people. >> reporter: don't tell these guys big foot is a bunch of craziness. they are professional researchers. they've spent plenty of time in oregon's blue mountains. >> it's not big foot, it's big foots. >> reporter: one theory, the shrieks could be the screams of local foxes. of course, it could be possible maybe it's big foot chasing the local foxes.